CN205296198U - Treatment structure of rock-fill dam body foundation gushing water - Google Patents
Treatment structure of rock-fill dam body foundation gushing water Download PDFInfo
- Publication number
- CN205296198U CN205296198U CN201521123826.3U CN201521123826U CN205296198U CN 205296198 U CN205296198 U CN 205296198U CN 201521123826 U CN201521123826 U CN 201521123826U CN 205296198 U CN205296198 U CN 205296198U
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- Prior art keywords
- rock
- plastics
- water
- dam
- blind material
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 39
- 229920003023 plastic Polymers 0.000 claims abstract description 31
- 239000004033 plastic Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 11
- 230000014759 maintenance of location Effects 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 11
- 241000826860 Trapezium Species 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 11
- 230000008595 infiltration Effects 0.000 description 11
- 238000001764 infiltration Methods 0.000 description 11
- 239000011257 shell material Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
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- Revetment (AREA)
Abstract
<b>The utility model discloses a processing structure that rock-fill dam body basis was gushed water, including rock-fill dam body basis (6), there is the point of gushing water in rock-fill dam body basis (6) scope, gushes and is equipped with drainage rock block (2) in water passageway (1) of gushing water the point, gushes water passageway (1) top and is equipped with blind material (3) of at least one deck plastics, and blind material (3) upper portion of plastics and peripheral cover have metalling (4). The utility model is suitable for a flow of gushing water point is less than 0.8m3And/s, when the water burst pressure is less than 1.5MPa, treating the water burst point of the dam foundation in the rock-fill filling range of the rock-fill dam. Has the economic advantages of simple structure, obvious effect, safety and reliability.</b>
Description
Technical field
This utility model relates to the process structure of a kind of Rockfill Dam basis retention of excessive fluid, belongs to Hydraulic and Hydro-Power Engineering technical field.
Background technology
Rock-fill dams are a kind of to landform and the good dam type of geological conditions adaptability, it is possible to adapt to various disadvantageous landform and geological conditions. Construction requires relative loose for rock-fill dams based process relatively concrete dam, particularly rockfill can be placed on cover layer, tomography or fragmented rock body, simultaneously because Rockfill Dam body section is big, corresponding dam foundation scope is wide, as then substantially uneconomical in all carried out processing according to concrete fundamental importance. But the dam foundation exists issue after often running into dam foundation excavation in engineering construction, once the flow running into issue in flood season will increase, directly influence the construction at scene, be likely to the safe condition having influence on dam body simultaneously. This is because along with the increase of water percolating capacity, it would be possible to cause the fine grained in dam shell stockpile (particularly sand gravel material) to run off, dam body failure by piping and then harm safety of dam body occur. The general infiltration processing emphatically the construction time in existing engineering, not affect dam facing construction for main principle, the modes such as major measure includes backfill boulder, pipe laying, but all there is the security risk of dam body generation failure by piping, and the construction that dam shell material is filled and rolled has certain impact.
Utility model content
The purpose of this utility model is in that, the process structure of a kind of Rockfill Dam basis retention of excessive fluid is provided, both can ensure that the draining of issue was unobstructed, speed and the single-point intensity of draining can be reduced again, ensure that the fine grained of the dam foundation and dam shell is not taken away by infiltration by drainage measure simultaneously, to guarantee that failure by piping does not occur dam body, thus overcoming the deficiencies in the prior art.
The technical solution of the utility model is achieved in that
The process structure of a kind of Rockfill Dam basis of the present utility model retention of excessive fluid, including Rockfill Dam basis, issue is there is in Rockfill Dam basic scope, draining block stone it is provided with in the water gushing channelway of issue, water gushing channelway top is provided with the blind material of at least one of which plastics, and the blind material top of plastics and periphery are coated with metaling.
In aforementioned structure, the thickness of described metaling is more than 100cm, and width extends 50��100cm to both sides, and section structure is trapezium structure.
In aforementioned structure, the two-end-point distance on the distance trapezium structure base, two ends of the blind material of described plastics is 50��100cm.
In aforementioned structure, the length of the blind material of described plastics is more than 3 times of water gushing channelway diameter.
Owing to have employed technique scheme, compared with prior art, this utility model is applicable to the flow of issue less than 0.8m to this utility model
3
/ s, when retention of excessive fluid pressure is less than 1.5MPa, rock-fill dams rockfill fills the process of the dam foundation issue of scope. This utility model utilize boulder drainage performance and and the filter protection of the blind material of plastics and metaling; ensure that the draining of the dam foundation is unobstructed; reduce infiltration intensity, it is to avoid dam body generation failure by piping, it is ensured that the construction scene of dam construction phase and the safety of dam body that run. Having structural shape simple, effect is obvious, safe and reliable economic advantages.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Being labeled as in figure: 1-water gushing channelway, 2-draining block stone, the blind material of 3-plastics, 4-metaling, 5-dam shell material, 6-Rockfill Dam basis.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
This utility model is constructed by the processing method of following a kind of Rockfill Dam basis retention of excessive fluid, as shown in Figure 1: the method by arranging the good draining block stone 2 of drainage performance inside the water gushing channelway 1 of issue in 6 scopes of Rockfill Dam basis, it is ensured that the draining of water gushing channelway 1 is unobstructed; Then at the blind material 3 of water gushing channelway 1 top layout plastics, it is prevented that the little granule in Rockfill Dam basis 6 is taken away by draining, plays filter protection effect; Secondly the metaling 4 of certain thickness and width is covered on plastics blind material 3 top and periphery; the protection blind material 3 of plastics is not destroyed; disperse the scope of seepage point simultaneously; reduce the intensity of infiltration; reduce and avoid the infiltration interference to dam construction, preventing later stage infiltration from washing away of dam shell material 5 is caused failure by piping simultaneously. The saturated comprcssive strength of draining block stone 2 is not less than 40MPa, and infiltration coefficient is not less than 1 �� 10
-1
Cm/s, the particle diameter of draining block stone 2 is determined according to water gushing channelway 1 aperture or range size, and maximum particle diameter is not more than 80cm. The blind material 3 of plastics arranges two-layer, and the length of the blind material 3 of plastics is not less than 3 times of water gushing channelway 1 apertures, and the blind material 3 of plastics is arranged along water gushing channelway 1 centrosymmetry, and the material behavior of the blind material 3 of plastics should meet the examination criteria of country or industry. Metaling 4 adopts the Transition Materials of rock-fill dams, saturated comprcssive strength to be not less than 40MPa, and the maximum particle diameter of metaling 4 is not more than 20cm, and the infiltration coefficient after rolling should reach 1 �� 10
-2
Cm/s��1 �� 10
-3
Cm/s, version adopts trapezium structure. Cover the metaling 4 of certain thickness and width at plastics blind material 3 top and periphery, thickness is more than 100cm, and width is to extend 50��100cm to both sides, the material grating of metaling 4, fills and rolls parameter and use with reference to rock-fill dams Transition Materials. Dam shell material 5 adopts sand gravel material or stockpile; Material behavior should meet current design criteria code requirement.
Process structure according to of the present utility model a kind of Rockfill Dam basis retention of excessive fluid that said method is constituted, as shown in Figure 1: include Rockfill Dam basis 6, issue is there is in 6 scopes of Rockfill Dam basis, draining block stone 2 it is provided with in the water gushing channelway 1 of issue, water gushing channelway 1 top is provided with the blind material 3 of at least one of which plastics, and plastics blind material 3 top and periphery are coated with metaling 4.The thickness of metaling 4 is more than 100cm, and width extends 50��100cm to both sides, and section structure is trapezium structure. The two-end-point distance on the distance trapezium structure base, two ends of the blind material 3 of plastics is 50��100cm. The length of the blind material 3 of plastics is more than 3 times of water gushing channelway 1 diameter.
Embodiment
The method of this example is: by arranging the good boulder of drainage performance inside rockfill dam foundation scope issue, it is ensured that the draining of issue is unobstructed; Then the blind material of EXIT POINT top layout plastics again, it is prevented that the little granule in dam foundation basis is taken away by draining, plays filter protection effect; Secondly the metaling of certain thickness and width is covered on the blind material top of plastics and periphery; the protection blind material of plastics is not destroyed; disperse the scope of seepage point simultaneously; reduce the intensity of infiltration; reduce and avoid the infiltration interference to dam construction, preventing later stage infiltration from washing away of dam shell material is caused failure by piping simultaneously. This utility model structural shape is simple, and effect is substantially, safe and reliable, has good economic advantages.
The structure of this example is as it is shown in figure 1, include water gushing channelway 1, draining block stone 2, the blind material 3 of plastics, metaling 4, dam shell material 5, the dam foundation 6.
Carry out essentially according to following steps during construction:
(1) remove Rockfill Dam basis 6 and fill water gushing channelway 1 cavity of issue in scope and the loosening block stone of periphery and silt;
(2) in water gushing channelway 1 cavity of issue, the draining block stone 2 that permeance property is good is backfilled;
(3) carrying out smooth to the basis, water gushing channelway 1 top of issue, the blind material 3 of two layers of plastic is laid on the base surface top after smooth;
(4) backfilling thickness on plastics blind material 3 top more than 100cm, width extends the metaling 4 of 50��100cm to both sides, by metaling 4, the blind material 3 of plastics is formed layer protective layer;
(5) rolled broken stone material 4;
(6) placement grinding dam shell material 5.
Claims (4)
1. the process structure of a Rockfill Dam basis retention of excessive fluid, including Rockfill Dam basis (6), it is characterized in that: in (6) scope of Rockfill Dam basis, there is issue, it is provided with draining block stone (2) in the water gushing channelway (1) of issue, water gushing channelway (1) top is provided with the blind material of at least one of which plastics (3), and the blind material of plastics (3) top and periphery are coated with metaling (4).
2. the process structure of Rockfill Dam basis retention of excessive fluid according to claim 1, it is characterised in that: the thickness of described metaling (4) is more than 100cm, and width extends 50��100cm to both sides, and section structure is trapezium structure.
3. the process structure of Rockfill Dam basis retention of excessive fluid according to claim 1, it is characterised in that: the two-end-point distance on the distance trapezium structure base, two ends of the blind material of described plastics (3) is 50��100cm.
4. the process structure of Rockfill Dam basis retention of excessive fluid according to claim 1, it is characterised in that: the length of the blind material of described plastics (3) is more than 3 times of water gushing channelway (1) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521123826.3U CN205296198U (en) | 2015-12-31 | 2015-12-31 | Treatment structure of rock-fill dam body foundation gushing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521123826.3U CN205296198U (en) | 2015-12-31 | 2015-12-31 | Treatment structure of rock-fill dam body foundation gushing water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205296198U true CN205296198U (en) | 2016-06-08 |
Family
ID=56469762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521123826.3U Expired - Fee Related CN205296198U (en) | 2015-12-31 | 2015-12-31 | Treatment structure of rock-fill dam body foundation gushing water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205296198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464124A (en) * | 2015-12-31 | 2016-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Treatment method and structure for water gushing of dam body foundation of rock-fill dam |
-
2015
- 2015-12-31 CN CN201521123826.3U patent/CN205296198U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464124A (en) * | 2015-12-31 | 2016-04-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Treatment method and structure for water gushing of dam body foundation of rock-fill dam |
| CN105464124B (en) * | 2015-12-31 | 2017-10-13 | 中国电建集团贵阳勘测设计研究院有限公司 | Treatment method and structure for water gushing of dam body foundation of rock-fill dam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20181231 |